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In‐Line Monitoring of Vinyl Acetate/Acrylic Acid Batch Copolymerizations through Near Infrared Spectroscopy
Author(s) -
Pereira Helder Luciano,
Machado Fabricio,
Lima Enrique Luis,
Pinto José Carlos
Publication year - 2011
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200900147
Subject(s) - vinyl acetate , acrylic acid , suspension (topology) , copolymer , suspension polymerization , materials science , infrared spectroscopy , polymerization , polymer chemistry , polymer , chemical engineering , chemistry , organic chemistry , composite material , mathematics , homotopy , pure mathematics , engineering
Near infrared spectroscopy (NIRS) is widely used for determination of polymer properties through in line and real time monitoring of polymerization reactions. Experimental runs were performed to evaluate whether NIRS can be used to monitor vinyl acetate/acrylic acid (VAc/AA) copolymerizations carried out in suspension reactors. It is shown that NIRS can be used successfully to monitor the evolution of VAc/AA suspension copolymerizations and that very good calibration models can be developed for monitoring of composition trajectories along the batch. Therefore, NIRS can be employed for real time monitoring and control of copolymer composition in VAc/AA copolymerizations performed in suspension reactors.